Daikin Error Codes
10 error codes for Daikin AC units. Description, severity level and solution steps for each code.
10 codesJapan
A1High
Indoor unit PCB fault
View CodesA5Medium
Indoor unit freeze protection or overload
View CodesC4Medium
Indoor unit heat exchanger temperature sensor fault
View CodesE1High
Outdoor unit PCB fault
View CodesE3High
Outdoor unit high pressure protection
View CodesE4High
Outdoor unit low pressure protection
View CodesE7High
Outdoor unit fan motor fault
View CodesF3High
Outdoor unit discharge line temperature fault
View CodesH9Medium
Indoor unit air temperature sensor fault
View CodesU4Medium
Indoor-outdoor unit communication error
View Codes